1. Social Determinants of Health Research CenterLorestan University of Medical Sciences Khorramabad Iran
2. Health Management and Economics Research CenterIran University of Medical Sciences Tehran Iran
3. Department of Health Services Management, School of Health Management and Information SciencesIran University of Medical Sciences Tehran Iran
4. Postgraduate School of Public Health, Department of Health Sciences (DISSAL)University of Genoa Genoa Italy
5. Laboratory for Industrial and Applied Mathematics (LIAM), Department of Mathematics and StatisticsYork University Toronto ON Canada